Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"pipe networks"”.
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Transient Analysis in Pipe Networks
… conditions resulting in high pressures can cause pipe failures by damaging valves and fittings. In this study, basic equations for solving transient analysis problems are derived using method of characteristics. Two example problems are presented. One, a single pipe system which is solved by …
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Realistic modelling of leakage in water distribution pipe networks
… distributed leakage in three differently sized pipe networks. It was found that the conventional power leakage equation results in significant leakage volume and flow rate errors under certain conditions. A methodology was also developed to correct the conventional power leakage equation so that …
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Analysis of pipe networks based on the Newton-Raphson method.
Massachusetts Institute of Technology, Dept. of Civil Engineering, Thesis. 1965. M.S.
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Optimisation of collector locations and pipe networks for dish–Rankine power plants
… collector placement, energy transport network pipe diameters, and network branching, accounting for shading, network heat loss, network pressure drop, network capital costs, and land costs. The thermal performance of the optimised collector field is assessed against respective fields comprised …
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Optimisation of collector locations and pipe networks for dish–Rankine power plants
… collector placement, energy transport network pipe diameters, and network branching, accounting for shading, network heat loss, network pressure drop, network capital costs, and land costs. The thermal performance of the optimised collector field is assessed against respective fields comprised …
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Topics in Optimization and Sparse Linear Systems
… Flow, and Minimum Cost Flow), Large Resistive Networks, and Laminar Flow in Pipe Networks.
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Modeling transient flow in intermittent water supply System
… hydraulic behavior of IWS systems (including pipe filling and draining events) and hence, it is difficult to understand and control IWS systems. In a recent PhD thesis, Lieb (2015) developed an open-source code to solve the dynamics of IWS pipe networks through finite volume solution of the …
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Minimization of stresses and pressure surges in pipes using nonlinear optimization.
… of stresses and liquid pressure surges in pipes is an important problem in the design of hydraulic pipe networks. The method of characteristics has been used to solve the transient stresses and pressures in liquid-filled piping systems. The friction force is included in the equations of …
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Design and fabrication of a maneuverable robot for in-pipe leak detection
Leaks in pipelines have been causing a significant amount of financial losses and serious damages to the community and the environment. The recent development of in-pipe leak detection technologies at Massachusetts Institute of Technology made it possible to find the accurate location of leaks in …
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A Model for Determining Leakage in Water Distribution Systems
Leaks in pipe networks cause significant problems for utilities and water users in terms of lost revenue and interrupted service. In many cities the leakage is as high as forty percent. A water audit is carried out to assess system-wide leakage. However, to detect leakage at the level of a …
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Influence of stormwater control measures on watershed hydrology and biogeochemical cycling
… surfaces and natural drainage channels with pipe networks that quicken flow paths and alter hydrologic regimes. Additionally, the import of food, application of fertilizer to lawns and gardens, and heightened atmospheric deposition increases nutrient availability in urban landscapes. These …
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The potential of renewable energy for rural groundwater supply in the Elundini Municipality
… infrastructure, supplying water via traditional pipe networks is not feasible. Historically, groundwater has been the water source of choice and abstracted via the use of diesel powered borehole pumps. These pumps are however noisy, require constant maintenance and are associated with high …
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Flow routing in the parallel pipes of a combined sewer system
A parallel pipe model has been constructed and successfully applied to a twin pipe sewer system. The model predicts flow and level for each of the parallel pipes and deals with the complex behaviour which occurs at cross-connections.<br/><br/>The model DUPPERS is an enhancement of the single pipe …
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A study of air flow in a network of pipes used in aspirated smoke detectors
… sampling is achieved by use of a system of long pipes containing numerous small inlet orifices termed as sampling holes. The air samples are drawn to the detector by means of an aspirator. In spite of the high sensitivity of the detector, much of this advantage can be lost if the smoke transport …
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Bacterial adhesion and detachment from model mineralized biofilms
… and engineered environments, including the pipe networks of DWDSs. Calcium carbonate is also often found precipitated on pipe walls and biofilms, but the influence of its presence on the interaction between biofilms and pathogens is still unknown. The objective of this study is to determine …